Question

If the midpoint between (8, y) and (-11, 6) is (-1.5, 5), find the value of y
how do i get this formula
5 = ( 6 + y)/2

Answer 1

the midpoint=(average of the x numbers of the endpoints, average of the y numbers of the end endpoints)

Answer 2

you have 5=(y+6)/2
and you have -1.5=(8+(-11))/2

Answer 3

the second equation is true
you only need to solve 5=(y+6)/2

Answer 4

how whould ik what to put where

Answer 5

what do you mean?

Answer 6

the y numbers of the endpoints are y and 6
the average of y and 6 is given by (y+6)/2 where this number is also suppose to be 5

Answer 7

if i have this
If the midpoint between (18, y) and (20, -15) is (19, -5), find the value of y.
it whould be in this form 18=20(+19)/2

Answer 8

and you do the same thing with the y's..